結果

問題 No.1638 Robot Maze
コンテスト
ユーザー yakamoto
提出日時 2021-08-06 21:44:39
言語 Kotlin
(2.1.0)
結果
AC  
実行時間 408 ms / 2,000 ms
コード長 4,689 bytes
コンパイル時間 20,597 ms
コンパイル使用メモリ 469,220 KB
実行使用メモリ 61,380 KB
最終ジャッジ日時 2024-09-17 01:38:57
合計ジャッジ時間 38,167 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge5
このコードへのチャレンジ
（要ログイン）
ファイルパターン 結果
sample AC * 3
other AC * 49
権限があれば一括ダウンロードができます
コンパイルメッセージ
Main.kt:177:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
  private inline fun debug(a: LongArray) {
          ^
Main.kt:181:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
  private inline fun debug(a: IntArray) {
          ^
Main.kt:185:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
  private inline fun debug(a: BooleanArray) {
          ^
Main.kt:189:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
  private inline fun toString(a: BooleanArray) = run{a.map { if (it) 1 else 0 }.joinToString("")}
          ^
Main.kt:191:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
  private inline fun debugDim(A: Array<LongArray>) {
          ^
Main.kt:198:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
  private inline fun debugDim(A: Array<IntArray>) {
          ^
Main.kt:205:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
  private inline fun debugDim(A: Array<BooleanArray>) {
          ^
Main.kt:222:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
  private inline fun assert(b: Boolean) = run{if (!b) throw AssertionError()}
          ^

ソースコード

diff # 

import java.io.BufferedReader
import java.io.InputStream
import java.io.InputStreamReader
import java.lang.AssertionError
import java.util.*
import kotlin.math.abs
import kotlin.math.max
import kotlin.math.min

val MOD = 1_000_000_007

class Solver(stream: InputStream, private val out: java.io.PrintWriter) {
  private val reader = BufferedReader(InputStreamReader(stream), 32768)

  fun solve() {
    val (H, W) = na(2)
    val costs = na(4)
    val (K, P) = nal(2)
    val (xs, ys, xt, yt) = na(4, -1)
    val grid = Array(H){ns()}

    data class Edge(val v: Int, val weight: Long)
    data class Visit(val v: Int, val cost: Long)
    val INF = 1e18.toLong()

    // U, D, R, L
    val dirs = arrayOf(
      intArrayOf(-1, 0),
      intArrayOf(1, 0),
      intArrayOf(0, 1),
      intArrayOf(0, -1)
    )

    fun g(v: Int): MutableList<Edge> {
      val row = v/W
      val col = v%W
      val res = mutableListOf<Edge>()

      for (i in 0 until 4) {
        val nrow = row + dirs[i][0]
        val ncol = col + dirs[i][1]
        if (nrow in (0 until H) && ncol in (0 until W)) {
          val cost = when(grid[nrow][ncol]) {
            '.' -> 0
            '#' -> INF
            else -> P // '@'
          } + costs[i]
          val nv = nrow * W + ncol
          res += Edge(nv, cost)
        }
      }

      return res
    }

    fun dijk(N: Int, s: Int): LongArray {
      val D = LongArray(N){INF}
      D[s] = 0
      val visited = BooleanArray(N)
      val que = PriorityQueue<Visit>(compareBy { it.cost })
      que.add(Visit(s, 0))
      while(que.isNotEmpty()) {
        val v = que.poll()!!
        if (visited[v.v]) continue
        visited[v.v] = true

        val edges = g(v.v)
        for (i in edges.indices) {
          val e = edges[i]
          if (v.cost + e.weight < D[e.v]) {
            D[e.v] = v.cost + e.weight
            que.add(Visit(e.v, D[e.v]))
          }
        }
      }
      return D
    }

    val s = xs * W + ys
    val t = xt * W + yt
    val dist = dijk(H*W, s)
    debug{"${dist[t]}"}
    val ans = if (dist[t] <= K) "Yes" else "No"
    out.println(ans)
  }













































  private val isDebug = try {
    // なんか本番でエラーでる
    System.getenv("MY_DEBUG") != null
  } catch (t: Throwable) {
    false
  }

  private var tokenizer: StringTokenizer? = null
  private fun next(): String {
    while (tokenizer == null || !tokenizer!!.hasMoreTokens()) {
      tokenizer = StringTokenizer(reader.readLine())
    }
    return tokenizer!!.nextToken()
  }

  private fun ni() = next().toInt()
  private fun nl() = next().toLong()
  private fun ns() = next()
  private fun na(n: Int, offset: Int = 0): IntArray {
    return IntArray(n) { ni() + offset }
  }
  private fun nal(n: Int, offset: Int = 0): LongArray {
    val res = LongArray(n)
    for (i in 0 until n) {
      res[i] = nl() + offset
    }
    return res
  }

  private fun na2(n: Int, offset: Int = 0): Array<IntArray> {
    val a  = Array(2){IntArray(n)}
    for (i in 0 until n) {
      for (e in a) {
        e[i] = ni() + offset
      }
    }
    return a
  }

  private inline fun debug(msg: () -> String) {
    if (isDebug) System.err.println(msg())
  }

  /**
   * コーナーケースでエラー出たりするので、debug(dp[1])のように添え字付きの場合はdebug{}をつかうこと
   */
  private inline fun debug(a: LongArray) {
    debug { a.joinToString(" ") }
  }

  private inline fun debug(a: IntArray) {
    debug { a.joinToString(" ") }
  }

  private inline fun debug(a: BooleanArray) {
    debug { toString(a) }
  }

  private inline fun toString(a: BooleanArray) = run{a.map { if (it) 1 else 0 }.joinToString("")}

  private inline fun debugDim(A: Array<LongArray>) {
    if (isDebug) {
      for (a in A) {
        debug(a)
      }
    }
  }
  private inline fun debugDim(A: Array<IntArray>) {
    if (isDebug) {
      for (a in A) {
        debug(a)
      }
    }
  }
  private inline fun debugDim(A: Array<BooleanArray>) {
    if (isDebug) {
      for (a in A) {
        debug(a)
      }
    }
  }

  /**
   * 勝手にimport消されるのを防ぎたい
   */
  private fun hoge() {
    min(1, 2)
    max(1, 2)
    abs(-10)
  }

  private inline fun assert(b: Boolean) = run{if (!b) throw AssertionError()}
  private inline fun assert(b: Boolean, f: () -> String) = run{if (!b) throw AssertionError(f())}

  companion object {
    // TestRunnerから呼びたいので単純なmainじゃだめ
    fun main() {
      val out = java.io.PrintWriter(System.out)
      Solver(System.`in`, out).solve()
      out.flush()
    }
  }
}

/**
 * judgeから呼ばれる
 */
fun main() = Solver.main()
0